Brilliant with octagonal table and surrounding trapezoidal facets

ABSTRACT

A brilliant with a crown side and a collar side which connect to one another along an edge circle. The crown side comprises an octagonal table; along each one of the table sides is located an additional small trapezoidal facet the height of which is at the most equal to one-fifth of the larger base and the lengthwise direction of which is the lengthwise direction of that side to which it connects. The thirty-two triangular facets of the crown side and of the collar side which are contigous to the edge circle are duplicated. The collar is subdivided into a middle facet and two side facets.

United States Patent [1 1 [111 3,763,665 Polakiewicz Oct. 9, 1973BRILLIANT WITH OCTAGONAL TABLE AND SURROUNDING TRAPEZOIDAL FACETS [75]Inventor: Jules Polakiewicz, Wilrijk, Belgium [73] Assignee: Belamco,Antwerpen, Belgium [22] Filed: Mar. 8, 1971 [21] Appl. No.: 121,758

[52] US. Cl. 63/32, D45/l A [51] Int. Cl. A440: 17/00 [58] Field ofSearch 63/32; D45/2 [56] References Cited UNITED STATES PATENTS D59,23510/1921 Kraus D45/2 Dl40,283 2/1945 Heller D45/2 D143,470 1/1946 FineD45/2 Dl4l,259 5/1945 Fine 63/32 X Primary Examiner-F. Barry ShayAtt0meyStevens, Davis, Miller & Mosher A brilliant with a crown side anda collar side which connect to one another along an edge circle.

The crown side comprises an octagonal table; along each one of the tablesides is located an additional small trapezoidal facet the height ofwhich is at the most equal to one-fifth of the larger base and thelengthwise direction of which is the lengthwise direction of that sideto which it connects.

The thirty-two triangular facets of the crown side and of the collarside which are contigous to the edge circle are duplicated.

The collar is subdivided into a middle facet and two side facets.

ABSTRACT 2 Claims, 7 Drawing Figures PATENTEDBEI 9 ma SHEET 1 BF 5 F g.1PRIOR ART BRILLIANT WITH OCTAGONAL TABLE AND SURROUNDING TRAPEZOIDALFACETS The invention relates to a brilliant with a crown side and acollar side which connect to one another along an edge circle, the crownside of which is comprised of:

a. a table in the shape of a regular octagon,

b. eight triangular facets each one of which has a side common to' theoctagonal table,

0. eight quadrangular facets which lie between the triangular facets,which each have a side common to each one of both triangular facetsbetween which they lie and with that apex thereof which is common tothose two sides which are not common to a triangular facet lying on theedge circle, and

eight pairs of triangular facets located between the quadrangularfacets, whereby both triangular facets of each pair have a first sidecommon to a quadrangular facet, a second side commcin to one another andthe third side thereof on the edge circle, and the collar side of whichis comprised of a. eight quadrangular facets with a common central apex,the overlying apex thereof lying on the edge ,circle and having sidescoinciding two by two which converge in the common apex,

and

. b. eight pairs of triangular facets located between the quadrangularfacets, whereby both triangular facets of each pairhave a first sidecommon to a quadrangular facet, a second side common to one another andthe third side thereof on the edge circle.

Brilliants of this kind with the described 57 facets among which thetable, are generally known. They sometimes have a small 58 facet, theso-called collar,

which is formed by grinding down parallel to the table, by the level ofthe central apex of the collar side.

The invention provides a brilliant which differs from the knownbrilliants as described above, by various features which give more valueto the brilliant according to the invention, notably because it reflectsmore light.

In a first embodiment of the invention along each one of the eight tablesides is located an additional small trapezoidal facet the height, ofwhich is at the most equal to one fifth of the larger base and thelengthwise direction of which is the lengthwise direction of that sideto which it connects.

In an advantageous embodiment of the invention, the additional smalltrapezoidal facets have their smaller bases common to the table sides.

In another advantageous embodiment, the additional small trapezoidalfacets have their larger bases common to the table sides.

According to a second feature of the invention the sixteen triangularfacets of the eight pairs of the crown side are duplicated and theadditional ribs due to the duplication are substantially in parallelrelationship with those sides said triangular facets have common withquadrangular facets.

According to a third feature of the invention the sixteen triangularfacets of the eight pairs of the collar side are duplicated and theadditional ribs due to the duplication are substantially in parallelrelationship with those sides said triangular facets have common withquadrangular facets.

According to a fourth feature of the invention, level with the centralapex is provided a collar with a middle facet and two side facets, themiddle facet being a rectangle having as two sides thereof those ribswhich are formed by the ground-down apexes of two opposite quadrangularfacets and having the two other sides common to the side facets, saidside facets being trapezoids the larger base of which is a side of themiddle facet and the three remaining sides of which are ribs formed bythe ground-down apexes of the remaining quadrangular facets of thecollar side.

Other details and features of the invention will stand out from thedescription given below by way of non limitative example and withreference to the accompanying drawings, in which:

FIG. 1 is a side view of a known brilliant, which is thus not madeaccording to the invention.

FIG. 2 is a top view of the brilliant shown in FIG. 1.

FIG. 3 is a bottom view of the brilliant shown in FIGS. l and 2.

FIG. 4 is a top view of a brilliant according to the invention.

FIG. 5 is a bottom view of the brilliant shown in FIG. 4; those threefacets which form the collar are not shown in this figure.

FIG. 6 shows on a larger scale part of the showing of FIG. 5, the threecollar facets being shown.

FIG. 7 is a top view of a second brilliant according to the invention.

In the'various figures, the same reference numerals pertain to similarelements.

The brilliant as shown in FIGS. I to 3, which is not made according tothe invention, will only be described to better show off the feature ofthe invention according to figures 4 to 7.

The brilliant shown in FIGS. 1 to 3 comprises a top or crown side 1 anda bottom or collar side 2 which connect to each other along an edgecircle 3.

The middle part of the crown side 1 is formed by a table 4 in the shapeof a regular octagon.

A triangular facet 5 is connected to each side of said octagon. Each oneof the eight triangular facets 5 has thus a side 6 common with table 4.

Between the eight triangular facets 5 are located eight quadrangularfacets 7. Each one of said quadrangular facets 7 has one side 8 commonwith each one of those two triangular facets 5 between which it islocated. The apexes 9 where the sides 8 of the quadrangular facets 7meet, coincide with an apex of said table. Those sides 10 which thequadrangular facets 7 have not in common with the triangular facets 5,converge in apexes 111 which are located on said edge circle 3.

Between the eight quadrangular facets 7 come to lie eight pairs oftriangular facets 12. Said triangular facets have a first side 10 commonwith a quadrangular facet 7, they have a second side 14 common with theother triangular facet from the same pair and they have their third side15 located on the circle 3.

The crown side is thus comprised of thirty-three facets, that is thetable 4, eight triangular facets 5, eight quadrangular facets 7 andsixteen triangular facets 12.

The collar side 2 comprises eight quadrangular facets 16 that form astar and which have a common central apex 17. The apexes 18 of the eightquadrangular facets 16 which face the central apex I7, lie on the circle3 and coincide with the apexes 11. Those sides 19 of the quadrangularfacets 16 which converge in the central apex l7, coincide two by two.

Between the eight quadrangular facets 116 are located eight pairs oftriangular facets 20. Both triangular facets of each pair have a firstside 21 common to a quadrangular facet 16; they have a second side 22common to the other triangular facet of the same pair. The third side 23of the facets 20 lies on said circle 3.

The brilliant according to the FIGS. 1 to 3 thus has on the collar side24 facets, that is eight quadrangular facets from the star and 16triangular facets from those facet pairs which are located between thestar quadrangular facets.

Altogether the brilliant shown in FIGS. 1 to 3 has thus 57 facets, thatis 33 from the crown side and 24 from the collar side.

The brilliant as shown in FIGS. 4 to 6, which is designed according tothe invention, differs from the brilliant as shown in FIGS. 1 to 3 whichcorresponds to the known art, by the four features describedhereinafter.

A first different feature is in the fact that along each one of theeight sides 5 of the table 4, an additional small trapezoidal facet 24is ground. Said small trapezoidal facet 24 extends essentially alongthat side 6 against which it lies. The smaller base of the smalltrapezoidal facet 24 coincides with the side 6 of the table 4. Thelarger base of the small trapezoidal facet 24 coincides with that sideof the triangular facet 5 which in the embodiment of FIGS. 1 to 3coincides with one side of the table 4.

The height of the trapezoid may at the the most be equal to one fifth ofthe larger base thereof, because the small trapezoidal facet 24 shouldextend mainly along a single direction in parallel relationship with thebases. Said lengthwise direction coincides with that side 6 of the table4 to which the small trapezoidal facet is connected. In FIG. 4 theheight of the trapezoid is only about one-tenth of the larger base.

A second different feature lies in the fact that the sixteen triangularfacets 12 of the eight facet pairs from the crown side, are duplicated.Each facet 12 is thus divided in a facet 25 and a facet 26, whereby theangle by which the facet 26 meets the plane of the edge circle 3 isnaturally larger than the angle included between said plane and facet25. The facets 25 and 26 meet along a rib 27. The rib 27 thus determinesthe duplication of the triangular facet 12. The ribs 27 are insubstantial parallel relationship with those sides where the nowduplicated facets 12 are connected to the quadrangular facets 7.

The sixteen triangular facets of the eight pairs of facets from thecollar side are also duplicated. Each facet 20 is thus divided in afacet 28 and a facet 29, whereby the angle by which the facet 29 meetsthe circle plane is by nature larger than the angle included between thefacet 28 and that same plane. The facets 28 and 29 meet along a rib 30.Said rib 30 thus determines the duplicated design of the triangularfacet 20. The ribs 30 are approximately parallel to those sides 21 wherethe now duplicated facets 20 are connected to the quadrangular facets16.

A fourth different feature lies in the design of the collar. It isalready known by the known brilliants to have level with the centralpoint of the collar side, a small surface which is essentially inparallel relationship with the crown side table.

In the embodiment shown in FIGS. 4 to 6, at the level of the centralapex 17 from the embodiment shown in FIGS. 1 to 3 there is provided amiddle facet 31 and two side facets 32. The middle facet is a perfectrectangle and it is in accurate parallel relationship with table 4 ofthe crown side 1. The sides 33 of the middle facet 31 are ribs which areformed by the ground-dowm apexes of two opposite quadrangular facets 16.The two remaining sides 34 of the middle facet 31 are each common withside facet 32.

The side facets 32 are trapezoids the larger base of which is a side 34and the three remaining sides 35 are ribs fonned by the ground-downapexes of the remaining quadrangular facets 16 from the collar side.

As compared with the known brilliant shown in FIGS. 1 to 3, thebrilliant according to FIGS. 4 to 6 has forty-three facets more, that isthe eight small trapezoidal facets along the table, the 32 smalladditional facets formed by the duplication of the 26 triangular facets12 from the crown side and of the 16 triangular facets 20 from thecollar side, the middle facet 31 and the two side facets 32 by the levelof the central apex 17 of the collar side. The brilliant as shown inFIGS. 4 to 6 has thus a hundred facets instead of 57.

The embodiment which is shown in top view in FIG. 7 only differs fromthe embodiment of FIGS. 4 to 6 by the fact that the small trapezoidalfacets along table 4 have the larger bases thereof common with the tablesides 6. Their smaller bases are thus connected to the triangular facets5, so that the apexes 9 fo the quadrangular facets 7 are actuallyreplaced by two small ribs and said quadrangular facets 7 becomehexagonal.

The invention is in no way limited to the above embodiments and manychanges may be brought therein without departing from the scope of theinvention as defined by the appended claims.

Although the best results are obtained with a brilliant having the fourabove-defined differences, it is not absolutely necessary to have allfour of these differences in each embodiment. A brilliant comprising butone, two or three of these different feature also falls within the scopeof the invention.

I claim:

1. Brilliant with a crown side, a collar side, and an edge circleconnecting said crown side to said collar side, said crown sidecomprising:

a. a table in the shape of a regular octagon,

b. eight small facets each in the shape of a trapezoid with a largebase, a small base and two sides connecting said bases, said small basecoinciding with a side of said table the height of said trapezoid beingat the most equal to one-fifth of said large base,

c. eight triangular facets, each one of which has a side common with alarge base of one of said small facets,

d. eight quadrangular facets which lie between said triangular facets,which each have a side common with each one of both triangular facetsbetween which they lie and with the apex thereof which is common to theremaining two sides lying on said edge circle,

e. eight pairs of generally trapezoidal facets, whereby both facets ofeach pair have a base common to a side of one of said quadrangularfacets, a side common with one another and another side thereof on saidedge circle, and eight pairs of triangular facets, whereby both facetsof each of said pairs of triangular facets have a first side common witha base of one of said generally trapezoidal facets, a second side commonto one another and the third side thereof on said edge circle, saidcollar side comprising:

g. a central collar with a middle facet being a rectangle and two sidefacets being trapezoids, the larger bases of which are sides of saidmiddle facet,

h. eight pentagonal facets with sides common with the two sides of saidmiddle facet which are not common with said side facets and with the sixremaining sides of said side facets, an apex of each of said eightpentagonal facets lying on the edge circle and said pentagonal facetshaving sides coinciding two by two which terminate at apexes of saidmiddle facet and said side facets,

. eight pairs of quadrangular facets located between said pentagonalfacets, whereby both quadrangular facets of each pair have a first sidecommon with one of said pentagonal facets, a second side common to oneanother and a third side on said edge circle, and

. eight pairs of triangular facets, whereby both facets of each of saidpairs of triangular facets have a first side common with one of saidquadrangular facets of said eight pairs, a second side common to oneanother and the third side-thereof on said edge circle.

2. Brilliant with a crown side, a collar side, and an edge circleconnecting said crown side to said collar side, said crown sidecomprising:

a. a table in the shape of a regular octagon,

b. eight small facets each in the shape of a trapezoid with a largebase, a small base, and two sides connecting said bases, said large basecoinciding with a side of said table, the height of said trapezoid beingat the most equal to one-fifth of said large base,

c. eight triangular facets each one of which has a side common with asmall base of one of said small facets,

d. eight hexagonal facets which lie between said triangular facets,which each have two sides common with sides of said trapezoids and aside common with each one of both triangular facets between which theylie and with that apex thereof which is common to the remaining twosides lying on said edge circle,

e. eight pairs of generally trapezoidal facets, whereby both facets ofeach pair have a base common with a side of one of said hexagonalfacets, a side common to one another and another side thereof on saidedge'circle, and i f. eight pairs of triangular facets, whereby bothfacets of each of said pairs of triangular facets have a first sidecommon with a base of one of said generally trapezoidal facets, a secondside common to one another and the third side thereof on the edgecircle,

said collar side comprising:

g. a central collar with a middle facet being a rectangle and two sidefacets being trapezoids, the larger bases of which are sides of saidmiddle facet,

h. eight pentagonal facets with sides common with the twosides of saidmiddle facet which are not common with said side facets and with the sixremaining sides of said side facets, an apex of each of said eightpentagonal facets lying on the edge circle and said pentagonal facetshaving sides coinciding two by two which terminate at apexes of saidmiddle facet and said side facets,

i. eight pairs of quadrangular facets located between said pentagonalfacets, whereby both quadrangular facets of each pair have a first sidecommon with one of said pentagonal facets, a second side common to oneanother and a third side on said edge circle, and

j. eight pairs of triangular facets, whereby both facets of each of saidpairs of triangular facets have a first side common with one of saidquadrangular facets of said eight pairs, a second side common to oneanother and the third side thereof on said edge circle.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3 ,.763 665 Dated October 9 1973 1nventor(s) JULES POLAKIEWICZ It iscertified that error appears in the above-identified patent and thatsaid Letters Patent are hereby corrected as shown below:

On the Title Page please insert --Foreign Application Priority DataJanuary 29, 1971 Belgium 99-,174

Signed and s ealed this mm day of Jun. 1971;..

(SEAL) Atteat:

EDWARD mmnmcmmm. c MARSHALL mun Atteating Officer x Commissioner ofPatents FORM PO-IOSO (10-69)

1. Brilliant with a crown side, a collar side, and an edge circleconnecting said crown side to said collar side, said crown sidecomprising: a. a table in the shape of a regular octagon, b. eight smallfacets each in the shape of a trapezoid with a large base, a small baseand two sides connecting said bases, said small base coinciding with aside of said table the height of said trapezoid being at the most equalto one-fifth of said large base, c. eight triangular facets, each one ofwhich has a side common with a large base of one of said small facets,d. eight quadrangular facets which lie between said triangular facets,which each have a side common with each one of both triangular facetsbetween which they lie and with that apex thereof which is common to theremaining two sides lying on said edge circle, e. eight pairs ofgenerally trapezoidal facets, whereby both facets of each pair have abase common to a side of one of said quadrangular facets, a side commonwith one another and another side thereof on said edge circle, and f.eight pairs of triangular facets, whereby both facets of each of saidpairs of triangular facets have a first side common with a base of oneof said generally trapezoidal facets, a second side common to oneanother and the third side thereof on said edge circle, said collar sidecomprising: g. a central collar with a middle facet being a rectangleand two side facets being trapezoids, the larger bases of which aresides of said middle facet, h. eight pentagonal facets with sides commonwith the two sides of said middle facet which are not common with saidside facets and with the six remaining sides of said side facets, anapex of each of said eight pentagonal facets lying on the edge circleand said pentagonal facets having sides coinciding two by two whichterminate at apexes of said middle facet and said side facets, i. eightpairs of quadrangular facets located between said pentagonal facets,whereby both quadrangular facets of each pair have a first side commonwith one of said pentagonal facets, a second side common to one anotherand a third side on said edge circle, and j. eight pairs of triangularfacets, whereby both facets of each of said pairs of triangular facetshave a first side common with one of said quadrangular facets of saideight pairs, a second side common to one another and the third sidethereof on said edge circle.
 2. Brilliant with a crown side, a collarside, and an edge circle connecting said crown side to said collar side,said crown side comprising: a. a table in the shape of a regularoctagon, b. eight small facets each in the shape of a trapezoid with alarge base, a small base, and two sides connecting said bases, saidlarge base coinciding with a side of said table, the height of saidtrapezoid being at the most equal to one-fifth of said large base, c.eight triangular facets each one of which has a side common with a smallbase of one of said small facets, d. eight hexagonal facets which liebetween said triangular facets, which each have two sides common withsides of said trapezoids and a side common with each one of bothtriangular facets between which they lie and with that apex thereofwhich is common to the remaining two sides lying on said edge circle, e.eight pairs of generally trapezoidal facets, whereby both facets of eachpair have a base common with a side of one of said hexagonal facets, aside common to one another and another side thereof on said edge circle,and f. eight pairs of triangular facets, whereby both facets of each ofsaid pairs of triangular facets have a first side common with a base ofone of said generally trapezoidal facets, a second side common to oneanother and the third side thereof on the edge circle, said collar sidecomprising: g. a central collar with a middle facet being a rectangleand two side facets being trapezoids, the larger bases of which aresides of said middle facet, h. eight pentagonal facets with sides commonwith the two sides of said middle facet which are not common with saidside facets and with the six remaining sides of said side facets, anapex of each of said eight pentagonal facets lying on the edge circleand said pentagonal facets having sides coinciding two by two whichterminate at apexes of said middle facet and said side facets, i. eightpairs of quadrangular facets located between said pentagonal facets,whereby both quadrangular facets of each pair have a first side commonwith one of said pentagonal facets, a second side common to one anotherand a third side on said edge circle, and j. eight pairs of triangularfacets, whereby both facets of each of said pairs of triangular facetshave a first side common with one of said quadrangular facets of saideight pairs, a second side common to one another and the third sidethereof on said edge circle.